LMS Ivatt Class 2 2-6-2T

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LMS Ivatt Class 2 2-6-2T
Wellington Locomotive Depot geograph-2206899-by-Ben-Brooksbank.jpg
Locomotive 41231 being coaled by grab, while the fireman attends to the smokebox. Wellington Locomotive Depot, 12 April 1960
Type and origin
Power type Steam
Designer H. G. Ivatt
Builder
Build date 1946–1952
Total produced 130
Specifications
Configuration 2-6-2T
UIC classification 1′C1′ h2t
Gauge 4 ft 8 12 in (1,435 mm)
Leading wheel
diameter
3 ft 0 in (0.914 m)
Driver diameter 5 ft 0 in (1.524 m)
Trailing wheel
diameter
3 ft 0 in (0.914 m)
Wheelbase 30 ft 3 in (9.22 m)
Length 38 ft 9 12 in (11.82 m)
Locomotive weight 63.25 long tons (64.3 t)
41290–41329: 65.20 long tons (66.2 t)
Fuel type Coal
Fuel capacity 3 long tons (3.0 t)
Water capacity 1,350 imp gal (6,100 l; 1,620 US gal)
Boiler LMS type 7
Boiler pressure 200 lbf/in2 (1.38 MPa)
Firegrate area 17.5 sq ft (1.63 m2)
Heating surface:
– Firebox
101 sq ft (9.4 m2)
Superheater area 134 sq ft (12.4 m2) or
124 sq ft (11.5 m2)
Cylinders Two, outside
Cylinder size 16 in × 26 in (406 mm × 660 mm)
Performance figures
Tractive effort 17,400 lbf (77.40 kN)
Career
Operator(s)
Power class
  • LMS: 2P
  • BR: 2MT
  • BR (SR): 2P/2FA
Axle load class BR: Route Availability 1
Withdrawn 1962–1967
Disposition Four preserved, remainder scrapped
41241 from the rear, showing the shape of the bunker

The London, Midland and Scottish Railway (LMS) Ivatt Class 2 2-6-2T is a class of light 'mixed-traffic' steam locomotive introduced in 1946.

Background[edit]

The LMS had various elderly tank engines and the operating department required a new small class 2 locomotive to replace them. Noting that the Great Western Railway 4500 and 4575 Classes of 2-6-2T ('Prairie') had been successful, George Ivatt designed the new engine type incorporating self-emptying ashpans and rocking grates which were labour-saving devices. A tender version, the Ivatt Class 2 2-6-0 was also produced. The LMS classified them as 2P, but BR preferred the classification 2MT.

Construction[edit]

The class was introduced between 1946 and 1952. They were based on the LMS Stanier 2-6-2T which was, in turn, based on the LMS Fowler 2-6-2T. Ten were built by the LMS before nationalisation in 1948, and were numbered 1200–1209. British Railways added the prefix '4' to their numbers so they became 41200–41209. A further 120 were built by BR, numbers 41210–41329. Most were built at Crewe,including 41272 — the 7000th locomotive to be built there, but the last ten were built at Derby. Fifty engines were fitted with push-pull equipment, these being Nos. 41210–41229, 41270–41289 and 41320–41329.

 Number   Date   Lot no.   Built at  Notes
LMS BR
1200–08 41200–08 1946 181 Crewe
1209 41209 1947 181 Crewe
41210–20 1948 195 Crewe Push-pull fitted
41221–29 1948 195 Crewe 41222 was push-pull fitted.
It was used on the Newport Pagnell branch until its closure in 1964.
41230–59 1949 204 Crewe
41260–69 1950 209 Crewe
41270–89 1950 209 Crewe Push-pull fitted
41290–99 1951 225 Crewe
41300–19 1952 225 Crewe
41320–29 1952 225 Derby Push-pull fitted

Service[edit]

The last thirty Crewe-built engines, 41290–41319, were allocated to the Southern Region from new. The rest were London Midland Region engines. They spent their lives mostly on branch line work.

The design formed the basis for the BR standard class 2 2-6-2T (numbers 84000–29), which were built to a slightly smaller loading gauge and so have slanted cab sides. These engines also incorporate a fallplate and fittings common to many BR standard classes, such as the chimneys.

In 1957 No.41224 was the first train to pass along the old Stafford and Uttoxeter Railway since closure six years earlier, and the last before the track was dismantled. It was chartered by the Midland area of the Stephenson Locomotive Society and carried more than 220 railway enthusiasts.[1]

Preservation[edit]

Four have survived to preservation, and now work on heritage railway lines:

  • 41241
  • 41298
  • 41312
  • 41313

No.41241 is particularly associated with the Keighley and Worth Valley Railway and when initially preserved was painted in a fictitious maroon livery with K&WVR on the tanks, though it was later restored to more conventional BR black.

During October 2006, the Ivatt Trust loaned the unrestored no. 41313 to the Isle of Wight Steam Railway. In October 2014, it was announced that the engine will be moved to the East Somerset Railway for overhaul. No 41298 was also moved to the Isle of Wight, and ownership of both these locos has now been transferred to the Isle of Wight Steam Railway. These locomotives will need conversion to work with the air-braked stock used on the island.

Models[edit]

Bachmann produced a 00 gauge model in various liveries. Dapol have released a model in British N gauge.

Fiction[edit]

A locomotive of this class appeared in the TV series Thomas the Tank Engine and Friends as the character 'Arthur'.

References[edit]

  1. ^ "Railway Enthusiasts Pack Last Train" Stafford Newsletter March 30th 1957
  • Rowledge, J.W.P. (1975). Engines of the LMS built 1923–51. Oxford: Oxford Publishing Company. ISBN 0-902888-59-5. 

External links[edit]